Home / 135,506.52-187,010.37-78,156.09

Finding the Fourth Proportional to 135,506.52, 187,010.37 and 78,156.09

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Solution

The fourth proportional to 135,506.52, 187,010.37 and 78,156.09 is: 107,861.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,506.52 : 187,010.37 = 78,156.09 : x
  2. Step 2: Convert to fraction form
    135,506.52/187,010.37 = 78,156.09/x
  3. Step 3: Cross multiply
    135,506.52x = 187,010.37 × 78,156.09
  4. Step 4: Simplify right side
    135,506.52x = 14,615,999,308.65
  5. Step 5: Solve for x
    x = 14,615,999,308.65/135,506.52
  6. Step 6: Final answer
    x = 107,861.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.